Weaver Top Mount Base 55 for Mossberg, Springfield, Mauser, Black - 48055 Each Weaver base is machined to the tightest tolerances for a custom fit. They are designed to fight the effects of recoil with a square-cut notch that precisely mates to the sturdy cross bolt in every Weaver detachable ring- Front Base for Mossberg 680, 695 (Use dual extension rings), 800, Springfield 03 (May require bolt and/or safety alteration) - Rear Base for Interarms Mark X, Mauser Swed. 96, small ring diameter 1.300" (Shimming may be required for proper scope alignment), Mossberg 680, 695 (Use dual extension rings), 800.
